Abstract:
:We present a simple readout device that fills the void produced by the gradual disappearance of the Vitck model 101 Electrothermia Monitor. The new device uses commercially available probes that are similar to Bowman's (IEEE Trans Microwave Theory Tech MTT-24:43-45, 1976) original design. As described, the device covers the range of 7 degrees to 45 degrees C with an accuracy and resolution of better than 0.1 degree C throughout. The digital readout (3 1/2 digits) is proportional to the thermistor resistance in the tip of the probe; it is converted to temperature through a formula or printed table. Outdoor dosimetric comparisons between the new and Vitek devices were conducted. Results showed no significant difference in the calculated specific absorption rates (SARs); moreover, variance was lower in the data collected from the new device.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Olsen RG,Bowman RRdoi
10.1002/bem.2250100210subject
Has Abstractpub_date
1989-01-01 00:00:00pages
209-13issue
2eissn
0197-8462issn
1521-186Xjournal_volume
10pub_type
杂志文章abstract::We investigated the thermal distribution and cardiovascular effects produced by sustained exposure of rats to 94 GHz radio-frequency electromagnetic radiation (RFR). Sixteen ketamine-anesthetized Sprague-Dawley rats were exposed individually at a power density of 75 mW/cm2 under far-field conditions in E orientation. ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract::We used exposure to microwaves from a global system for mobile communication (GSM) mobile phone (915 MHz, specific absorption rate (SAR) 37 mW/kg) and power frequency magnetic field (50 Hz, 15 muT peak value) to investigate the response of lymphocytes from healthy subjects and from persons reporting hypersensitivity t...
journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章
doi:10.1002/bem.20103
更新日期:2005-04-01 00:00:00
abstract::We conducted a pilot study to assess magnetic field levels in electric compared to gasoline-powered vehicles, and established a methodology that would provide valid data for further assessments. The sample consisted of 14 vehicles, all manufactured between January 2000 and April 2009; 6 were gasoline-powered vehicles ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21730
更新日期:2013-02-01 00:00:00
abstract::The mechanism by which animals detect weak electric and magnetic fields has not yet been elucidated. We propose that transduction of an electric field (E) occurs at the apical membrane of a specialized cell as a consequence of an interaction between the field and glycoproteins bound to the gates of ion channels. Accor...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20310
更新日期:2007-07-01 00:00:00
abstract::Composition and content of lipids were studied in leaves of red perilla plants (Perilla nankinensis [Lour.] Decne.) grown in weak permanent horizontal magnetic field (PMF) of 500 µT flux density under controlled illumination, temperature, and humidity in the phytothron chamber. Control plants were grown under similar ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21957
更新日期:2016-02-01 00:00:00
abstract::Stress proteins are important in protection during cardiac ischemia/reperfusion (cessation and return of blood flow) and are reportedly induced by electromagnetic (EM) fields. This suggests a possible ischemia protection role for EM exposures. To test this, chick embryos (96 h) were exposed to 60 Hz magnetic fields pr...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1998)19:8<498::aid-bem8>3.
更新日期:1998-01-01 00:00:00
abstract::Low-energy pulsed electromagnetic field (PEMF) therapy has been suggested as a promising therapy to increase microcirculation, which is of great concern in patients with fibromyalgia. This study evaluated the effectiveness of PEMF therapy on the treatment of fibromyalgia. A group of 108 women with fibromyalgia were al...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,随机对照试验
doi:10.1002/bem.22127
更新日期:2018-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22003
更新日期:2016-12-01 00:00:00
abstract::Mobile phone use in the United Kingdom and other countries has risen steeply since the early 1990's when the first digital mobile phones were introduced. There is an ongoing controversy about whether radio frequency (RF) exposure from mobile phones increases the risk of brain cancer. However, given the widespread use ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20648
更新日期:2011-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250140303
更新日期:1993-01-01 00:00:00
abstract::The present article reviews the basic principles of a new approach to the characterization of pulmonary disease. This approach is based on the unique nuclear magnetic resonance (NMR) properties of the lung and combines experimental measurements (using specially developed NMR techniques) with theoretical simulations. T...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/(sici)1521-186x(1999)20:4+<110::aid-bem13>
更新日期:1999-01-01 00:00:00
abstract::A new method for finding the dielectric parameters of biological substances is presented. The method makes use of the loss-tangent as a function of frequency to identify the dominating relaxation process. The method was tested for a few cell suspensions (blood and lymphocytes) and two tissues (liver and spleen). The o...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250070303
更新日期:1986-01-01 00:00:00
abstract::Both eyes of anesthetized cynomolgus monkeys (Macaca fascicularis) were irradiated with 2.45-GHz microwaves, either pulsed or continuous wave. In vivo corneal endothelial abnormalities were observed by specular microscopy and confirmed through histologic techniques after a 16- to 48-hour postexposure period. Pulsed mi...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250060209
更新日期:1985-01-01 00:00:00
abstract::We studied the influence of magnetic fields (MFs) and simulated solar radiation (SSR) on ornithine decarboxylase (ODC) and polyamines in mouse epidermis. Chronic exposure to combined MF and SSR did not cause persistent effects on ODC activity or polyamines compared to the animals exposed only to UV, although the same ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::Several investigators have reported robust, statistically significant results that indicate that weak (approximately 1 microT) magnetic fields (MFs) increase the rate of morphological abnormalities in chick embryos. However, other investigators have reported that weak MFs do not appear to affect embryo morphology at a...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1997)18:6<431::aid-bem5>3.
更新日期:1997-01-01 00:00:00
abstract::This article presents measurement methods used to determine the human exposure to electromagnetic fields radiated from operating base stations. In Korea, when evaluating the human exposure to electromagnetic fields from operating base stations, the measurement procedure is different between the following cases: in sit...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20416
更新日期:2008-10-01 00:00:00
abstract::Despite experimental evidence supporting ICR-like interactions in biological systems, to date there is no reasonable theoretical explanation for this phenomenon. The parametric resonance approach introduced by Lednev has enjoyed limited success in predicting the response as a function of the ratio of AC magnetic inten...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20406
更新日期:2008-07-01 00:00:00
abstract::The use of wireless digital communication devices like GSM, WCDMA, HSPA, DECT, and WiFi changes the exposure of electromagnetic waves toward the user. Concentrating on the power variations on a slow and fast time scale, these new systems are discussed. Experimental results for both uplink and downlink are included for...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20569
更新日期:2010-05-01 00:00:00
abstract::Magnetotactic bacteria produce nanometer-size intracellular magnetic crystals. The superior crystalline and magnetic properties of magnetosomes have been attracting much interest in medical applications. To investigate effects of intense static magnetic field on magnetosome formation in Magnetospirillum magneticum AMB...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20469
更新日期:2009-05-01 00:00:00
abstract::In this study, we aimed to clarify the effects of chronically applied static magnetic field (200 Gauss) on specific ATPase activities and bioelectrical and biomechanical responses in isolated rat diaphragm muscle. The mean activities of Na(+)-K+ ATPase and Ca2+ ATPase determined from the diaphragm homogenates were sig...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160302
更新日期:1995-01-01 00:00:00
abstract::A retrospective study on reproductive hazards was performed among 542 employees at Swedish power plants. Questionnaires were answered by 89% of the employees. Data on pregnancies were checked by studying hospital case records. There was a statistically significant, decreased frequency of "normal" pregnancy outcome, al...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250040109
更新日期:1983-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20593
更新日期:2010-10-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20658
更新日期:2011-09-01 00:00:00
abstract::An experimental arrangement is described that maximized the dosimetric information that can be obtained during in vitro studies with ELF magnetic fields. The arrangement enables researchers to distinguish between a purely magnetic-field effect and one that also involves the electric fields and currents induced by the ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250110306
更新日期:1990-01-01 00:00:00
abstract::A system is described that uses an oscillating magnetic field to produce power-frequency electric fields with strengths in excess of those produced in an animal or human standing under a high-voltage electric-power transmission line. In contrast to other types of exposure systems capable of generating fields of this s...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250050202
更新日期:1984-01-01 00:00:00
abstract::Some numerical and analytical methods used to estimate the internal electric fields and current densities produced within human and animal models by low-frequency electric and magnetic fields are surveyed. A major goal of such modeling is the design of laboratory experiments on cellular systems or animal models to pro...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/bem.2250130705
更新日期:1992-01-01 00:00:00
abstract::Serial longitudinal and transverse sections were prepared from roots of Cucumis sativus and Cucurbita maxima that had been exposed/sham-exposed to 60-Hz electric fields for 0-2 days. Field exposures were selected to produce a 10-20% or a 70-80% growth inhibition in whole roots of both species. Cortical cell length and...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250080108
更新日期:1987-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130305
更新日期:1992-01-01 00:00:00
abstract::A mechanism is presented that predicts new biological effects of static and sinusoidal weak magnetic fields. The model is based on an earlier proposed interference mechanism of quantum states of ions within protein cavities. The quantum dynamics of an ion is studied for the case of ion-protein complexes that rotate in...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00
abstract::Pulsed electromagnetic fields (PEMF) have been proven to be effective for promoting bone mass and regulating bone turnover both experimentally and clinically. However, the exact mechanisms for the regulation of PEMF on osteoclastogenesis as well as optical exposure parameters of PEMF on inhibiting osteoclastic activit...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22070
更新日期:2017-12-01 00:00:00